/*
* Copyright (c) 2006-2007 Erin Catto http:
*
* This software is provided 'as-is', without any express or implied
* warranty.  In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked, and must not be
* misrepresented the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
// var b2CircleContact = Class.create();
// Object.extend(b2CircleContact.prototype, b2Contact.prototype);
// Object.extend(b2CircleContact.prototype,
import b2Contact from './b2Contact';
import b2Manifold from './../../collision/b2Manifold';
import b2ContactNode from './b2ContactNode';
import b2Math from './../../common/math/b2Math';
import b2Collision from './../../collision/b2Collision';
import b2CircleShape from '../../collision/shapes/b2CircleShape';
import b2Shape from '../../collision/shapes/b2Shape';
export default class b2CircleContact extends b2Contact {
    constructor(s1, s2) {
        super(s1, s2);
        this.m_manifold = [new b2Manifold()];
        // The constructor for b2Contact
        // initialize instance variables for references
        this.m_node1 = new b2ContactNode();
        this.m_node2 = new b2ContactNode();
        //
        this.m_flags = 0;
        if (!s1 || !s2) {
            this.m_shape1 = null;
            this.m_shape2 = null;
            return;
        }
        this.m_shape1 = s1;
        this.m_shape2 = s2;
        this.m_manifoldCount = 0;
        this.m_friction = Math.sqrt(this.m_shape1.m_friction * this.m_shape2.m_friction);
        this.m_restitution = b2Math.b2Max(this.m_shape1.m_restitution, this.m_shape2.m_restitution);
        this.m_prev = null;
        this.m_next = null;
        this.m_node1.contact = null;
        this.m_node1.prev = null;
        this.m_node1.next = null;
        this.m_node1.other = null;
        this.m_node2.contact = null;
        this.m_node2.prev = null;
        this.m_node2.next = null;
        this.m_node2.other = null;
        //
        // initialize instance variables for references
        this.m_manifold = [new b2Manifold()];
        //
        //super(shape1, shape2);
        //b2Settings.b2Assert(this.m_shape1.m_type == b2Shape.e_circleShape);
        //b2Settings.b2Assert(this.m_shape2.m_type == b2Shape.e_circleShape);
        this.m_manifold[0].pointCount = 0;
        this.m_manifold[0].points[0].normalImpulse = 0.0;
        this.m_manifold[0].points[0].tangentImpulse = 0.0;
    }
    static Create(shape1, shape2, allocator = null) {
        return new b2CircleContact(shape1, shape2);
    }
    static Destroy(contact, allocator = null) {
    }
    //~b2CircleContact() {}
    Evaluate() {
        if (this.m_shape1 instanceof b2CircleShape && this.m_shape2 instanceof b2CircleShape) {
            b2Collision.b2CollideCircle(this.m_manifold[0], this.m_shape1, this.m_shape2, false);
        }
        if (this.m_manifold[0].pointCount > 0) {
            this.m_manifoldCount = 1;
        }
        else {
            this.m_manifoldCount = 0;
        }
    }
    GetManifolds() {
        return this.m_manifold;
    }
}
b2Contact.AddType(b2CircleContact.Create, b2CircleContact.Destroy, b2Shape.e_circleShape, b2Shape.e_circleShape);
